Intervention effectmodel-written summary

Nitrogen application did not affect soil nitrogen content in any trial year.

A claim from Effects of Nitrogen and Sulfur Fertilizers on Nitrogen Content in Soil, Ear Leaf, Flag Leaf and Grain of QPM Maize Varieties at Samaru Zaria · 2012

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen application did not affect soil nitrogen content in any trial year.

Taxon
MaizeZea mayst0
Treatment
Nitrogen applicatione0
Outcome
nitrogen content in the soile0
Direction
did not affecte0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrogen application did not affect nitrogen content in the soil at all the three years of the trial”

✓ located verbatim in the source · abstract, characters 704–804
t0

“Maize”

✓ located verbatim in the source · title, characters 109–114

Title

Effects of Nitrogen and Sulfur Fertilizers on Nitrogen Content in Soil, Ear Leaf, Flag Leaf and Grain of QPM Maize Varieties at Samaru Zaria

M. M. Jaliya; U. F. Chiezey; B. Tanimu; et al. Journal of Agricultural Science 2012. doi:10.5539/jas.v4n5p217

Other claims from this paper (4)

Record rev-aa235d83cd3c5bbb7d9a2a13404ff55da127c365140e5f70ad2c80bd710eceab · schema claims-v0.9 · position 3 in the model’s answer

nitrogen · nutrient: content · Zea mays (maize)Positive and negative results

489 papers: 403 positive, 86 negative or no effect

85 papers in the same direction as this claim · 403 in the opposite direction

  1. positive
    Nitrogen fertilizer enhanced N uptake in all maize parts.

    Nutrient Uptake and Productivity as Affected by Nitrogen and Potassium Application Levels in Maize/Sweet Potato Intercropping System · 2001

    Opposite directionCited by this paper

  2. positive
    The variable yield goal zone strategy used 6–46% less nitrogen than uniform management.

    Economic Feasibility of Variable‐Rate Nitrogen Application Utilizing Site‐Specific Management Zones · 2004 · compared with uniform N management

    Opposite direction

  3. positive
    Withholding nitrogen from V8 to maturity reduced N uptake by 53%.

    Nitrogen Uptake and Partitioning in Stay‐Green and Leafy Maize Hybrids · 2005

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  4. positive
    Surface-applied 3:1 urea/urea phosphate increased ear-leaf nitrogen at silking relative to surface-banded urea.

    Nitrogen Fertilizer Source, and Method and Time of Application Effects on No‐till Corn Yields and Nitrogen Uptakes1 · 1986 · compared with surface‐banded urea

    Opposite direction

  5. positive
    At no nitrogen input in monoculture, shoot N, Ca and Mg concentrations were lower than other treatments.

    Crop Rotation and Nitrogen Input Effects on Soil Fertility, Maize Mineral Nutrition, Yield, and Seed Composition · 2009 · compared with other N input/rotation treatments

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  6. positive
    Nitrate in washing solution increased uptake 3.5-fold over control.

    Nitrate Uptake and Induction of Nitrate Reductase in Excised Corn Roots · 1975 · compared with control

    Opposite direction

  7. positive
    Nitrogen uptake was greater from nitrate than ammonium.

    Nitrate and Ammonium as Sources of Nitrogen for Corn and Their Influence on the Uptake of Other Ions1 · 1970 · compared with ammonium

    Opposite direction

  8. positive
    Fv/Fm, photosynthetic CO2 assimilation and leaf nitrogen concentration increased with nitrogen level and followed low-high-low variation.

    Effects of nitrogen stress on the photosynthetic CO2 assimilation, chlorophyll fluorescence and sugar-nitrogen ratio in corn · 2015

    Opposite direction

480 papers more in this group

See all 489 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.